chore(deps): update dependency flake8 to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
flake8 (changelog)	^6.0.0 -> ^7.0.0

---

Release Notes

pycqa/flake8 (flake8)

v7.3.0

Compare Source

v7.2.0

Compare Source

v7.1.2

Compare Source

v7.1.1

Compare Source

v7.1.0

Compare Source

v7.0.0

Compare Source

---

Configuration

📅 Schedule: Branch creation - "every weekday,after 9am and before 5pm" in timezone America/Los_Angeles, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: poetry.lock

The Poetry configuration is invalid:
  - Additional properties are not allowed ('package-mode' was unexpected)